Question

Magnetic flux of $10 \mu Wb$ is linked with a coil, when a current of 2 mA flows through it. What is the self inductance of the coil?

• A. 10 mH
• B. 5 mH
• C. 15 mH
• D. 20 mH

Answer 1

Answer: (B)

5 mH

Answer 2

Magnetic flux $\phi =Li$
$\, \, \, \, \, L= \frac {\phi}{i}= \frac {10 \times 10^{-6}}{2 \times 10^{-3}}=5 \times 10^{-3}=5 mH$